No syringes or objects resembling syringes are to be brought within a 50 meter radius of SCP-XXXX unless authorized by at least two personnel with level 3 clearance or above for the purpose of experimentation.

A 50m radius is substantial - if that effect can emanate beyond walls, that means a non-standard containment unit must be utilized;

Why any level 3 personnel? It should be left to the researchers in charge of that SCP.

In the event that SCP-XXXX’s cell has sustained damage, SCP-XXXX is to be moved to a temporary containment unit until reparations are complete.

You mean to say repairs, not reparations. Reparations mean something entirely different from physical repair.

Looking at the main description, a few things stick out to me in the negative, including the following:

The definition of a syringe for the purpose of this object;

The physics of somehow manipulating a several tonne object to breaking the sound barrier.

All in all, this just seems like a poorly written exposition of a limited-effect superhero, and I would firmly downvote this should it appear on the main site.